History, 16th CenturyHistory, 17th CenturyBehavior ControlOffice VisitsHouse CallsAmbulatory CareUnited StatesPrimary Health CareHealth Care SurveysOutpatient Clinics, HospitalRetrospective StudiesAppointments and SchedulesProspective StudiesQuestionnairesFollow-Up StudiesPatient Acceptance of Health CarePatient SatisfactionHealth ServicesAmbulatory Care FacilitiesPhysician-Patient RelationsPhysician's Practice PatternsHospitalizationCohort StudiesTime FactorsCross-Sectional StudiesPatient ComplianceTreatment OutcomePrenatal CareFamily PracticeHealth Services AccessibilityMedicaidAsthmaPhysicians' OfficesOutpatientsInfant, NewbornTape RecordingPediatricsUtilization ReviewLogistic Models